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PMID:19850612

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Citation

Martinez, MA, de Mendoza, D and Schujman, GE (2010) Transcriptional and functional characterization of the gene encoding acyl carrier protein in Bacillus subtilis. Microbiology (Reading, Engl.) 156:484-95

Abstract

Acyl carrier protein (ACP) is a universal and highly conserved carrier of acyl intermediates during fatty acid biosynthesis. The molecular mechanisms of regulation of the acpP structural gene, as well as the function of its gene product, are poorly characterized in Bacillus subtilis and other Gram-positive organisms. Here, we report that transcription of acpP takes place from two different promoters: PfapR and PacpP. Expression of acpP from PfapR is coordinated with a cluster of genes involved in lipid synthesis (the fapR operon); the operon consists of fapR-plsX-fabD-fabG-acpP. PacpP is located immediately upstream of the acpP coding sequence, and is necessary and sufficient for normal fatty acid synthesis. We also report that acpP is essential for growth and differentiation, and that ACP localizes in the mother-cell compartment of the sporangium during spore formation. These results provide the first detailed characterization of the expression of the ACP-encoding gene in a Gram-positive bacterium, and highlight the importance of this protein in B. subtilis physiology.

Links

PubMed Online version:10.1099/mic.0.033316-0

Keywords

Acyl Carrier Protein/genetics; Acyl Carrier Protein/metabolism; Bacillus subtilis/genetics; Bacillus subtilis/growth & development; Bacillus subtilis/metabolism; Bacterial Proteins/genetics; Bacterial Proteins/metabolism; Base Sequence; Cloning, Molecular; Escherichia coli/genetics; Gene Expression Regulation, Bacterial; Genes, Bacterial; Lipid Metabolism; Molecular Sequence Data; Multigene Family; Operon; Promoter Regions, Genetic; Transcription Factors/metabolism; Transcription Initiation Site; Transcription, Genetic

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

BACSU:ACP

GO:0034305: regulation of asexual sporulation

ECO:0000315:

P

Figure 6 shows that in the absence of ACP, sporulation efficiency was dramatically lower than in the presence of ACP

complete
CACAO 5282


See also

References

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